Car construction



June 14, 1932. G. G, GILPIN CAR CONSTRUCTION original Fild May 1e, 19292 Sheets-Sheet Invenofj.' iadb 61617 m H 0141165 June 14, 1932. G. G.GiLPlN 1,863,243

CAR CONSTRUCTION Original Filed May 16, 1929 2 Sheets-Sheet 2 a@ o )LPatented June 14, 1932 UNITED STATES GARTI-I Gr. GILPIN, OF RIVERSIDE,

COMPANY, OF

PATENT OFFICE ILLINOIS, ASSIGNOR TO UNION METAL PRODUCTS CHICAGO,ILLINOIS, A CORPORATION OF DELAWARE CAR CONSTRUCTION Originalapplication filed May 16, 1929, Serial No. 363,550, now Patent No.1,813,537, dated July 7, 1931.

Divided and this application ed October 30, i930.

By nature of their requirements railway freight cars are out of doorssubstantially all of the time, therefore, are subjected te corrosiveaction of the elements, and while paint and other non-corrosive coatingshave been applied to the car parts, such protection not only has beenfound to be expensive in time and money, but the lading removes thecoating. rlhis is particularly true of the inside of open type carswhich are turned upside down in unloading machines causing the load toslide across the inside surface of the car body and also when thedischarging load slides across the surface of a drop door and also whenthe long lading rests upon the lowered drop end gate of a gondola carthe friction therebetween caused by the movement of the car also removesthe protective coating from the end gate. Furthermore, certain ladings,such as sulphur, wet coal, which forms sulphuric acid, and saline water.(in refrigerator and stock cars) cause rolled steel or iron to corrode.On account of its increased strength rolled steel in the form of platesand bars has supplanted wood in car construction but the corrosiveaction of the elements eats away the rolled steel or iron materialreducing their strength and their length of life. This applies to boththe load carrying members, such as the sills, plates and diaphragms andalso to the lading retaining members, such as side and end walls,floors, hoppers, hopper doors, etc. It has been found that cast metal,particularly cast steel, has more than twice the resistance to corrosionthan rolled steel, therefore, one of the objects of the invention is tomake the car part of cast metal, preferably cast steel, to enable thecar part to resist corrosion, and furthermore, to produce a constructionwherein the metal can be disposed and positioned to accommodate thestresses set up by the car in service. Such a cast constructionnecessitates a minimum amount of material for strength requirements.

Another object is to eliminate the cost and delay in fabricating thenumerous component parts of the present structural steel car parts.

Another object of forming the car part of cast metal is to eliminate thepossibility of Serial No. 492,231.

loose connections which would permit relative motion between thecomponent parts of the car part, as it is common knowledge that thevibration of the car in motion, due to rough and uneven track, and steelwheels rolling on steel rails, together with longer trains and highspeeds in present day practice, cause riveted joints and built upsections to work loose and the railroads look with favor upon any devicewhich reduces the number of parts and joints, as these are the weakparts of the car and the more such weak parts are eliminated, the longerthe life of the car. i

In the drawings:

igs. l and 2 show a general service car with my invention appliedthereon.

Fig. 3 shows a modified cross bearer for the same car.

Fig. 4 is a section on line 4-4 of Fig. 3.

Figs. 5 and 6 show a modification of my invention, wherein the centerconstruction consists of a single web.

Fig. 'l' is a section on line 7-7 of Fig. 5.

Fig. 8 is a perspective showing the center construction and cross bearerof the car similar to that shown in Figs. l and 2.

Figs. l to 4L inclusive and Fig. 8 show my improvements applied to anopen top gondola car wherein the floor comprises a plurality of doorshinged to the center construction with cross bearers or diaphragmspositioned between the doors. Such cars are called general service cars.The center construction 5l consists of an integral casting comprisingoppositely disposed webs 52 with an upper compression member 53 and alower tension member 54. As cast metal is stronger under compressionthan in tension the compression member is preferably made of thickermaterial and reinforced with ribs 55. The center construction isprovided with outwardly projecting iianges 56 under which the door 50projects. The hinge butts 57 are preferably cast integral with thecenter construction. The center construction is also provided withintegral cross bearers 58 to secure cooperation between the webs underload.

Figs. 5, 6 and 7 show a modified form of my improvement as applied to ageneral service car. The Center construction consists of an I-beamsection having a web 7 5 and upper relatively thick compression member76 and lower tension member 77. The cross diaphragm lis preferably ycastintegral and also comprises an I-beam section having a web 78, uppermember 7 9 and lower member 80. The lower ymem-bers of the I-beamsection are positioned obliquely to prevent them retaining part of theload when the car is dumped.

The accompanying drawings illustrate the preferred iorm 'of ltheinvention, though it is to be understood that the invention is Vnotlimited yto the eXact details of construction shown an'dldescribed, asit is obvious that various modifications thereof, within the scope oftheclaims, will occur to persons skilled i-n the art.

"This is 'a'division'of my co-.pending application Serial No. 363,550,iiled May 16, 1929, n'ow Patent No. 1,813,537, issued July 7, l1931. l

yIclaim: v

Yl. A -castme'tal center construct-ion tor a railway car consisting y'of'an integral casting comprising spaced apart webs,an upper portion,'alowerportiom and `hinge lugs integral with said webs. j

2. A cast metal lcenter construct-ion 'ier a railway'ca'r consisting ofan integral casting comprising 'spaced apart webs, a relatively thickupper portion, and a relatively thin lower portion.

3; A 'cast metal center construction tor a railway car consisting of anintegral casting comprising spaced apart webs,-an upper por* tion with.outwardly projecting flanges =to overlap a door., and alo'wer portion.

4. A cast metal un'derframe for a railway car 'consisting of anintegralcasting comprising a center construction with spaced apart webs,an 'upper portion with outwardly pro jecting'flange's to overlap a door,and a lower portion with 'outwardly projecting flanges, and crossbearers comprising spaced apart webs, a lower yportionzand anupperportionl with outwardly projecting flanges to overlap a door. Y

'5. A 1cast metal center construction for railway car consisting of anintegral casting comprising spaced apart webs, an upper portion with anoutwardly projecting flange to overlap a door, and hinge lugs integralwith said webs and said upper flange.

AA cast `metal center construction for a railway car consisting of anintegral castingl comprising spacedapart webs, an upper por-V tion withan outwardly projecting flange to overlap a door, and cross bearerscomprising upper portionswith Aoutwardly projecting flanges to overlap'a door.

minfrn G. GILPiN.

